{"product_id":"metabo-bsz-144-replacement-battery-144v-3300mah-ni-mh","title":"Metabo 6.25475 Cordless Drill Replacement Battery 14.4V 3300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMetabo BSZ 14.4 Series — 14.4V Ni-MH Replacement Battery (6.25475)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V 3300mAh Ni-MH replacement battery for the Metabo BSZ 14.4, BSZ 14.4 Impuls, SBZ 14.4 Impuls, and SBZ 14.4 Impuls series cordless drill\/drivers. It matches the OEM part numbers 6.25475 and 6.25476. The pack slots directly into the original battery bay and communicates with the factory charger.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBSZ and SBZ 14.4 platform fit:\u003c\/strong\u003e\n    These models share the same 14.4V rail, battery connector, and BMS handshake protocol. The pack geometry and contact placement are identical across the BSZ 14.4, BSZ 14.4 Impuls, and SBZ 14.4 Impuls variants, so one battery serves the full lineup.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through full charge and load cycles on a BSZ 14.4. The BMS held stable through repeated trigger pulls, and the charger accepted the pack without fault codes or termination errors.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBreak-in procedure for Ni-MH cells:\u003c\/strong\u003e\n    On first use, run the drill at half load for two full discharge-charge cycles before applying maximum torque. Ni-MH cells need a conditioning period — skipping this leaves usable capacity unrealised and can cause premature voltage cutoff under heavy fastening loads.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBMS cutoff on motor-start inrush during hard drilling\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eWhen a drill bit bites into dense material, the motor draws a spike of current before it reaches operating speed. On a 14.4V Ni-MH pack, this inrush can exceed the BMS overcurrent threshold — especially if the cells haven't been conditioned. The BMS trips to protect the cells, and the tool cuts out instantly mid-hole. Running two break-in cycles at reduced load gives the BMS current data to calibrate its trip threshold before you push the pack hard.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTool bogs and loses torque under sustained load\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the BSZ 14.4 feels weak or slows during long fastening runs, the issue is usually voltage sag — the pack voltage drops under load as cell impedance rises. On a used Ni-MH pack, this is often caused by cell sulfation from repeated shallow cycling. Check the rail contacts on both the battery and the tool for oxidation first — dirty contacts add resistance and worsen sag. A fully discharged and recharged pack should hold above 12.5V under moderate drilling load; below that, cell degradation is the cause.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43416063213658,"sku":"BWCS-MTX475PX-1","price":107.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43416063246426,"sku":"BWCS-MTX475PX-2","price":126.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43416063279194,"sku":"BWCS-MTX475PX-3","price":141.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTX475PX-1.webp?v=1779760040","url":"https:\/\/batteryweb.com\/products\/metabo-bsz-144-replacement-battery-144v-3300mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}